










326 NATURAL HISTORY MISCELLANY. 
their effects in determining the range of those plants cultivated for food; 
and, at the same time to trace the character of the fundamental rocks 
u a 
not confine the attention of the reader to the physical features of the 
Mississippi Valley alone, but carries him away over the Rocky Moun- 
ins down the Pacific slope, and up the Valley of the St. Lawrence, and 
are well calculated to give the general reader a good idea of the forma- 
tion of our continent, and the origin of the grand features which go very 
far in Eon the physical and moral condition of the nations dwell- 
ing on its surfac 

NATURAL HISTORY MISCELLANY. 
—À———— 
BOTANY. 
TABLE-MOUNTAIN DOE The seems to exist such a diversity of 
opinion among authors in regard to the geographical range of this tree 
(Pinus pungens Michaux), that we dh thought a statement as to its dis- 
tribution might not be amiss. 
Michaux rra ae it would be the first of our native trees to be- 
me e extine 







idge 
od northward.” In 18 859, Gray limited it to «Blue Ridge, Vir- 
= west of Charlottesville, and southward.” In 1863, he adds, on the 
ty of Prof. Porter, “the mountains of Penna etc." In 1867 
oo same author E a new D: near Reading, Pa., which was dis- 
| es nll Hipp dr aud 


how common the tree is in tns Thus far I qe 
s the b aks Rb X rss River, n Mission — 


